Content

VBS/Rettub

Type
Virus
SubType
VbScript
Discovery Date
06/14/2003
Length
4,352
Minimum DAT
4267 (05/28/2003)
Updated DAT
4272 (06/18/2003)
Minimum Engine
5.1.00
Description Added
06/19/2003
Description Modified
06/19/2003 6:44 AM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

Tab Navigation

Characteristics

This threat is detected as VBS/Rettub. On executing the infected VBScript, the virus will modify the following registry settings:

  • HKEY_LOCAL_MACHINE\MIRC\VBS.HOTBUTTER,
    Like a hot knife thru Butter - I am your worst Enemy
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\
    vbs.hotbutter, C:\windows\system\sex.vbs
It will save itself as sex.vbs in the following directories:
  • c:\
  • C:\Mydocu~1
  • c:\Program Files
  • c:\Windows
  • c:\WINDOWS\Desktop
  • c:\WINDOWS\SYSTEM
  • c:\WINDOWS\SYSTEM32
  • c:\progra~1
  • c:\progra~1\winamp
  • c:\progra~1\winace
  • c:\progra~1\winrar
  • c:\progra~1\winzip
  • c:\download
  • c:\windows\startm~1
  • c:\windows\temp
  • c:\recycled
  • c:\windows\tempor~1
  • c:\windows\cookies
  • c:\windows\command
  • c:\windows\help
  • c:\windows\cursors
  • c:\windows\java
  • c:\windows\fonts
  • c:\windows\web
  • c:\windows\drwatson
  • c:\windows\config
  • c:\windows\tasks
  • c:\windows\pif
  • c:\windows\media
  • c:\windows\catroot
  • c:\windows\inf
  • c:\windows\samples
  • c:\windows\all users
  • c:\windows\sentto
  • c:\windows\recent
  • c:\windows\offline web pages

The virus will infect mIRC Script.ini to send the infected sex.vbs. This file is detected as MIRC/Generic.

It will create c:\windows\winstart.bat to delete the following AV files:

  • C:\Progra~1\Networ~1
  • C:\Progra~1\Mcafee
  • C:\Progra~1\F-Prot
  • C:\Progra~1\F-Secure
  • C:\Progra~1\Avp
  • C:\Progra~1\Datafe~1

On the 15th of every month, the following mesage will be displayed:

Like a hot knife thru Butter - I am your worst Enemy

Symptoms

The presence of the file sex.vbs in the above directories. The message displayed on 15th of every month.

Method of Infection

Executing the infected VBScript.

Removal

Use current engine and DAT files for detection and removal.

Using File Filtering with WebShield SMTP for WindowsNT(not applicable for Solaris):
Within the Configuration console select content filtering.
Select Add.
Add a Description for the content filter rule such as VBSBlock.
Select Filter on Attachment File name.
Filter on .vbs
Select OK.

Additional Windows ME/XP removal considerations

AVERT Recommended Updates:

* Office2000 Updates

* scriptlet.typelib/Eyedog vulnerability patch

* Outlook as an email attachment security update

* Exchange 5.5 post SP3 Information Store Patch 5.5.2652.42 - this patch corrects detection issues with GroupShield

For a list of attachments blocked by the Outlook patch and a general FAQ, visit this link.
Additionally, Network Administrators can configure this update using an available tool - visit this link for more information.

Variants

Variants

    N/A

All Information

Overview -

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Aliases

  • VBS.Butterhot (NAV)

Characteristics

Characteristics -

This threat is detected as VBS/Rettub. On executing the infected VBScript, the virus will modify the following registry settings:

  • HKEY_LOCAL_MACHINE\MIRC\VBS.HOTBUTTER,
    Like a hot knife thru Butter - I am your worst Enemy
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\
    vbs.hotbutter, C:\windows\system\sex.vbs
It will save itself as sex.vbs in the following directories:
  • c:\
  • C:\Mydocu~1
  • c:\Program Files
  • c:\Windows
  • c:\WINDOWS\Desktop
  • c:\WINDOWS\SYSTEM
  • c:\WINDOWS\SYSTEM32
  • c:\progra~1
  • c:\progra~1\winamp
  • c:\progra~1\winace
  • c:\progra~1\winrar
  • c:\progra~1\winzip
  • c:\download
  • c:\windows\startm~1
  • c:\windows\temp
  • c:\recycled
  • c:\windows\tempor~1
  • c:\windows\cookies
  • c:\windows\command
  • c:\windows\help
  • c:\windows\cursors
  • c:\windows\java
  • c:\windows\fonts
  • c:\windows\web
  • c:\windows\drwatson
  • c:\windows\config
  • c:\windows\tasks
  • c:\windows\pif
  • c:\windows\media
  • c:\windows\catroot
  • c:\windows\inf
  • c:\windows\samples
  • c:\windows\all users
  • c:\windows\sentto
  • c:\windows\recent
  • c:\windows\offline web pages

The virus will infect mIRC Script.ini to send the infected sex.vbs. This file is detected as MIRC/Generic.

It will create c:\windows\winstart.bat to delete the following AV files:

  • C:\Progra~1\Networ~1
  • C:\Progra~1\Mcafee
  • C:\Progra~1\F-Prot
  • C:\Progra~1\F-Secure
  • C:\Progra~1\Avp
  • C:\Progra~1\Datafe~1

On the 15th of every month, the following mesage will be displayed:

Like a hot knife thru Butter - I am your worst Enemy

Symptoms

Symptoms -

The presence of the file sex.vbs in the above directories. The message displayed on 15th of every month.

Method of Infection

Method of Infection -

Executing the infected VBScript.

Removal -

Removal -

Use current engine and DAT files for detection and removal.

Using File Filtering with WebShield SMTP for WindowsNT(not applicable for Solaris):
Within the Configuration console select content filtering.
Select Add.
Add a Description for the content filter rule such as VBSBlock.
Select Filter on Attachment File name.
Filter on .vbs
Select OK.

Additional Windows ME/XP removal considerations

AVERT Recommended Updates:

* Office2000 Updates

* scriptlet.typelib/Eyedog vulnerability patch

* Outlook as an email attachment security update

* Exchange 5.5 post SP3 Information Store Patch 5.5.2652.42 - this patch corrects detection issues with GroupShield

For a list of attachments blocked by the Outlook patch and a general FAQ, visit this link.
Additionally, Network Administrators can configure this update using an available tool - visit this link for more information.

Variants

Variants -

    N/A